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The excess molar enthalpies (HmE) for the binary mixtures of trimethyl phosphate (TMP) with alkanols {CH 3 (CH 2 ) n OH, n=0–3} have been measured with an isothermal calorimeter at 298.15K and atmospheric pressure. The HmE values are positive for all the mixtures over the whole composition range. The values increase in the order methanol<ethanol<1-propanol<1-butanol...
The enthalpy increments Δ273.15KTHm0 of Na2W2O7(s) and Na2W4O13(s) were measured in the temperature range 273–979K by the drop method using a high temperature Calvet HT-1000 calorimeter. The results can be represented by the polynomial equations: Δ273.15KTHm0(Na2W2O7)=−71,006+211.12T+10.720×10−2T2+2.566×106T−1Δ273.15KTHm0(Na2W4O13)=−136,568+388.97T+6.643×10−2T2+6.950×106T−1 The expressions of the...
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